// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __GSASTATEPOLICYNORMAL_H__

#define __GSASTATEPOLICYNORMAL_H__

#include <e32base.h>

#include <ssm/ssmstatepolicy.h>

#include <ssm/ssmconditionalcallback.h>

#include <ssm/conditionevaluate.h>

class CSsmCommandListResourceReader;

/**

Normal state policy plug-in for GSA. This is a polymorphic dll.

Implements MSsmStatePolicy to initialize, prepare and return command list using CSsmCommandListResourceReader.

Implements MSsmConditionalCallback to decide whether to include a command in a command list or not.

@internalComponent

@released

@see MSsmStatePolicy

@see MSsmConditionalCallback

*/

NONSHARABLE_CLASS(CGsaStatePolicyNormal) : public CBase, public MSsmStatePolicy, public MSsmConditionalCallback

	{

public:

	IMPORT_C static MSsmStatePolicy* NewL();

	//from MSsmStatePolicy

	TResponse TransitionAllowed(const TSsmStateTransition& aRequest, TSsmStateTransition const* aCurrent, TSsmStateTransition const* aQueued, 

								const RMessagePtr2& aMessage);

	void Initialize(TRequestStatus& aStatus);

	void InitializeCancel();

	void PrepareCommandList(TSsmState aState, TInt aReason, TRequestStatus& aStatus);

	void PrepareCommandListCancel();

	CSsmCommandList* CommandList();

	TBool GetNextState(TSsmState aCurrentTransition, TInt aReason, TInt aError, TInt aSeverity, TSsmState& aNextState);

	void Release();

	// from MSsmConditionalCallback

	TBool ConditionalCommandAllowedL(CResourceFile& aResourceFile, TInt aResourceId);

private:

	~CGsaStatePolicyNormal();

	CGsaStatePolicyNormal();

	void ConstructL();

	TBool TransitionSupported(const TSsmState& aRequestedState) const;

private:

	RArray<TSsmState> iCurrentlySupportedTransitions;	

	CSsmCommandListResourceReader* iCommandListResourceReader;

	RFs iFs;

	//CConditionEvaluate is created and used only when patchable constant KSsmGracefulOffline is enabled

	CConditionEvaluate *iEvaluator;

	// Possible panic codes within Normal policy

	enum TNormalPanicCodes

		{

		/**

		 Panic when command list resource reader is NULL

		*/

		EInvalidResourceReader = 1,

		/**

		 Panic when Main state supplied is not 'ESsmNormal'

		*/

		EInvalidNormalState,

		/**

		 Panic when ConditionalCommandAllowedL is called for a command which hasn't implemented conditional_information

		*/

		EConditionalInfoNotImplemented

		};

	};

#endif	// __GSASTATEPOLICYNORMAL_H__